618-0810/02 – Steel Casting and Crystallization (LiaKrO)

Gurantor departmentDepartment of Metallurgy and FoundryCredits5
Subject guarantorprof. Ing. Jiří Bažan, CSc.Subject version guarantorprof. Ing. Zdeněk Adolf, CSc.
Study levelundergraduate or graduateRequirementCompulsory
Year2Semesterwinter
Study languageCzech
Year of introduction2004/2005Year of cancellation2015/2016
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
BAZ50 prof. Ing. Jiří Bažan, CSc.
SOC02 doc. Ing. Ladislav Socha, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Combined Credit and Examination 16+0

Subject aims expressed by acquired skills and competences

- student will be able to demonstrate basic regularities proceeding at steel casting, solidification and crystallization of steel. Student will be practice this knowledge due to practical exercises in the Department's lab. - student will be able to formulate micro-segregate and macro-segregate processes in steel - student will be able to characterize defects of ingots and continuously cast blanks - student will be know basic possibilities of simulations of ingots' solidification by the ProCast software and the possibilities of utilization of these simulations in the plant conditions. - student will gain experience of the structure of the continuous casting steel and ingots and using Baumann fingerprints methods for different conditions, with a focus on heterogeneity, segregation and internal defects in steel samples.

Teaching methods

Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs
Project work

Summary

Subject is read with the purpose to understand the basic regularities and processes proceeding at steel casting, solidification and crystallization of steel (by the help of practical exercises), the conditions of homogenous and heterogeneous nucleation of crystals, the micro-segregate and macro-segregate processes, the defects of ingots and continuously cast blanks, the theoretical and technological aspects at steel casting into the ingot moulds as well as on the continuous casting machine.

Compulsory literature:

[1] Fruehan, R. J.: The Making, Shaping and Treating of Steel, AISE Steel Foundation, 1998, 767 p. ISBN 0-930767-02-0. [2] Yogeshwar, S., Toshihiko, E.: Tundish Technology for Clean Steel Production, World Scientific, 2007, 313 p., ISBN 9812706216. [3] Catalog of Ingot Defects. Verlag Stahleisen GmbH Düsseldorf, 2003, p. 83. ISBN: 978-3-514-00692-8 [4] Chakrabarti, A. K.: Steel Making, PHI Learning Pvt. Ltd., 2006, p. 240. ISBN: 978-8-120-33050-4.

Recommended literature:

[1] Schwerdtfeger, K.: Metallurgie des Stranggießens. Verlag Stahl und Eisen GmbH. Düsseldorf, Deutschland, 1992. 640 s. ISBN 3 -514-00350-5. [2] Gupta, R. C.: Theory and Laboratory Experiments in Ferrous Metallurgy, PHI Learning Pvt. Ltd., 2010, p. 32. ISBN: 978-8-120-33924-8.

Way of continuous check of knowledge in the course of semester

Scoring semestral work.

E-learning

Lessons are continuously enriched by ever expanding implementation of e-learning elements.

Další požadavky na studenta

It is necessary to elaborate a semestral project for the credit obtaining.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

Lectures 1. Equilibria. Equilibrium constant and manners of its expression. Principle of action and reaction. 2. Criteria of processes equilibria (G, K). Reaction isotherm and its importance. 3. Ideal solution – Raoult’s law. Diluted solution – Henry’s law. 4. Thermodynamic activity of a component in solution. Manners of expressing activity of component in solution. 5. Calculation of activity coefficients in poly-component systems. Molten steelmaking slags – molecular theory of slags. 6. Ion theory of slags. Affinity of elements – especially to oxygen. 7. Nernst distribution law. Distribution of oxygen between slag and metal. 8. Reactions running at production and refining of steel: oxidation of Si and Mn, transfer of oxygen from atmosphere into steel bath. Dephosphorisation of steel. 9. Desulphurisation of steel. Solubility of gases in metals; dependence on partial pressure of gas and on temperature. 10. Hydrogen in iron and steel. Nitrogen in iron and steel. 11. Oxygen in iron and steel. Carbon reaction and its importance at production and refining of steel. 12. Influence of temperature and pressure of development of carbon reaction. Vacuum carbon deoxidation of steel. 13. Coagulating deoxidation of steel. Diffusion deoxidation and deoxidation of steel by synthetic slags. 14. Inclusions in steel. Nucleation of inclusion and modification of inclusions.

Conditions for subject completion

Combined form (validity from: 1960/1961 Summer semester, validity until: 2008/2009 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (145) 51
        Examination Examination 100  0
        Exercises evaluation Credit 45  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.FormStudy language Tut. centreYearWSType of duty
2015/2016 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2014/2015 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2013/2014 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2012/2013 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2011/2012 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2010/2011 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2009/2010 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2008/2009 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2007/2008 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2006/2007 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan
2005/2006 (N2109) Metallurgical Engineering (2109T035) Technologies of Metal Production K Czech Ostrava 2 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner